Research & information: general 17 Biology, life sciences 9 Literary studies: c 1500 to c 1800 5 Literary studies: plays & playwrights 5 Political structure & processes 5 Technology: general issues 5 Western philosophy: Medieval & Renaissance, c 500 to c 1600 5 Entrepreneurship 4 History of science 4 Literature & literary studies 4 Social & cultural history 4 linguistics 4 Mathematics & science 3 Medicine 3 Sociology 3 Technology, engineering, agriculture 3 The arts 3 Archaeology 2 Business mathematics & systems 2 Central government policies 2 Education 2 European history 2 History 2 History of education 2 History of engineering & technology 2 Human rights 2 Humanities 2 Impact of science & technology on society 2 International law 2 International relations 2